Corydoras duplicareus ? And agressive behavior

All posts regarding the care and breeding of these catfishes from South America.
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kiwidu21
Posts: 212
Joined: 13 Mar 2016, 09:22
My cats species list: 20 (i:4, k:0)
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Location 1: France
Location 2: Côte D'Or

Corydoras duplicareus ? And agressive behavior

Post by kiwidu21 »

Good morning,
when I went to the pet store I saw that they had C. adolfoi. Already having a duplicareus, I immediately noticed that one of the 3 in the pet store was not an adolfoi but I have my doubts about the other two.
Here are the photos of the pectoral spines of the 3 specimens purchased.
The first has a fairly wide band which reminds me more of a duplicareus.

Image
Image
Image

What do you think ?

When I introduced the new ones, my old cory became aggressive. They chase the new ones quite violently and don't let them go. I have never seen such behavior before. Is there a risk of stressing newcomers too much?
https://youtu.be/b4CzPPrrNpc?feature=shared[/youtube]
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